Still for absorption refrigerating apparatus.



No. 706,90I.

Patented Aug. l2, |902. N. w. CONDICT. STILL FUR ABSORPTIUNREFRIGERATING APPARATUS.

(Application filed Nov. 16, 1901,)

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1,... ABSRPTIN REFBIGERATING APPARATUS.

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NATHAN V. CONDICT, OF JERSEY CITY, NEW JERSEY.

STILL FOR ABSORPTlON REFRIGERATING APPARATUS.

SPECIFICATION forming part of Letters Patent N o. 706,901, dated August12, 1902.

Application filed November 16, 1901. Serial No. 82,535. (No model.)

To all whom t may concern:

Be it known that I, NATHAN W. CONDICT, a citizen of the United States ofAmerica, residing in Jersey City, in the county of Hudson, State of NewJersey, have invented an Improved Still for Absorption RefrigeratingApparatus, of which the following is a specification. V

My invention has reference more particularly to that class ofrefrigerating apparatus which works by the absorption process; and themain object of lny invention is to so construct the apparatus as toimprove the operation of generating the gas and also to enable thegeneration of the gas to be under more perfect control. Y

In the accompanying drawings, Figure l is a vertical section ofmyimproved still on the Fig. 2 is a sectional plan line 2 2, Fig. vv2.view taken through the still.A Fig. 3 is an elevation of the front endof the still, and Fig. 4: is an elevation of the rear end of the same.

I prefer to make the main body or generating-chamber .of the still inthe form of a horizontal cylinder A. My still is so constructed thateither exhaust-steam or live steam, or both, may be employed, asconvenience may dictate. For this purpose I arrange the steam-coils S inthe chamber A in several independent sets. In this case they are inhorizontal layers, each layer being preferably coiled in the serpentineform shown in the plan view, Fig. 2. In the drawings I have shown eightof these horizontal serpentine coils over each other, each coil beingconnected at opposite ends to headers H H and P P. The upper sevensuperposed coils S are connected at the front end to the inlet-headers HH', the ends of four coils being connected to one header H, while theends of the other four coils are connected to the other header H. Eachpipe end opens into its separate box h in the header, admission to whichfrom the common steam-space K is controlled by an independent handvalve7c, Fig. l. The common steam-spaces K of the two headers are connectedto the inlet-pipeM-for the exhaust-steam by'branches fm., so thatbyopening the appropriate valve or valves 7c the exhaust-steam can beadmitted to any of the coils S in the still. In order that live steammay be used, however, when desired, I provide a'live-steam-supply pipeX, connected to the bottom coil S and also connected by branches fr tothe inlet ends of the other coils or some of them between the headers HH and the still. Valves ai are provided to control the admission ofsteam to the several coils. A branch ,e with valve Z from the live-steampipe X can be used to admit live steam to the headers H H when desired.When exhaust-steam is used, many of the sets of coils will be required;but when live steam is used but few of the sets of coils will be neededfor the eicient operation of the apparatus.

The outlet ends of the coils S and S' pass throughfthe rear of the stillA into headers P P', leading to a common outlet Q. These coils S, whichlead at theinletend from the header H, have their outlet ends at thediagonall y opposite corner connected to the header P, Fig. 3. In likemanner the coils which have their inlets connected tothe header H havetheir outlets connected to the header P. The successive superposed coilsS are thus connected to the inlet-headers H H at opposite sides of thestill alternately.

The construction of the coils in horizontal serpentine form is not onlyconvenient for manufacture, but gives an extended heatingsurface, and inaddition the construction of independent superposed coils has thisfurther advantage that in case the level of liquor in the retortdescends below the level of the top coil of pipe, for instance, (asshown by the gage,) such topcoil can be cut out of the cir-I culationand the desired proportion of heating-surface to the quantity of liquorbe maintained.

I claim as my inventionl. In an ammonia-still for refrigeratingpurposes, the combination of the generatingchamber of the still andsteam-coils therein, with two connected headers at the inlet end and twoconnected headers at the outlet end, the headers at the inlet end havingvalves to control the admission of steam to the different coils andmeans for supplying steam from diderent sources to the inlet-headers.

2. In an ammonia-still for refrigerating purposes, the combination ofthe generatingchamber of the still with steam-coils in hori- IOO zontalserpentine layers, these successive layers having their-inlets atopposite sides of the still alternately and valved headers controllingthe admission of steam to the said coils.

3. In an ammonia-still for refrigerating purposes, the combination ofthe generatingchamber of the still and steam-coils therein with headershaving valves to control the admission of exhaust-steam to the coils, alivesteam pipe and valved connections from the latter to the inlets ofsaid coils.

4. In an ammonia-still for refrigerating purposes, the combination ofthe generatingchamber of the still with steam-eoils in independent setsand both a live-steam-supply pipe and an eXhaust-steam-supply pipe andvalves controllingr admission therefrom to the several independent setsof coils, substantially as described.

In testimony whereof I have signedl my name to this specification in thepresence of two subscribing Witnesses.

NATHAN W. CONDICT.

Witnesses:

F. WARREN WRIGHT, HUBERT HovvsoN.

